let  chartDataStr=decodeHtml(chartData);
let chartJsonArray=JSON.parse(chartDataStr);

let arrayLength =chartJsonArray.length;
let numericData =[];
let labelData=[];
for (let i=0;i<arrayLength;i++){
    numericData[i]=chartJsonArray[i].value;
    labelData[i]=chartJsonArray[i].label;
}

//饼图
const data = {
    labels: [
       labelData
    ],
    datasets: [{
        label: 'My First Dataset',
        data:numericData,
        backgroundColor: [
            'rgb(255, 99, 132)',
            'rgb(54, 162, 235)',
            'rgb(255, 205, 86)'
        ],
        hoverOffset: 4
    }]
};

//配置选项
const options={
    plugins:{
        title:{
            display:true,
            text:'项目状态'
        }
    }
}
new Chart(document.getElementById("myPieChart"), {
    type:'pie',
    data:data,
    options:options

})
    function decodeHtml(html) {
        let txt = document.createElement("textarea");
        txt.innerHTML = html;
        return txt.value;
    }
